Nutrition and Stresses of Short Term Space Flight

The nutritional requirements for short-term space flights which are most likely to be affected by the expected stressors and operational malfunctions or both, especially that of the Environmental Control System, are water and calories. Evidence accumulated under simulated or analogous situations on Earth would indicate that calcium and protein imbalance may occur. Experiments have been proposed to study selected nutritional parameters during Gemini missions of increasing duration.